Sociedade Independente de Comunicação, better known as SIC, is one of the two leading commercial TV channels in Portugal, the other being Televisão Independente (TVI). It is the most popular TV channel in the country since February 2019, ahead of TVI and flagship public channel RTP1. SIC and its sister channels, such as SIC Notícias, SIC Radical and SIC Mulher, are owned by Impresa, a Portuguese media conglomerate.

SIC has had essentially the same logo since its launch, consisting of a colourful band containing the letters S and C, with I in between. It is carried on channel 3 on all Portuguese television platforms.

1987–1992 (prelaunch)

This logo was used when the company was registered and was never used on air. At the time, Granada Television had a 20% interest in SIC, together with Impala, Expresso and Projornal. What happened to Granada's investment is unknown as it left before Globo started to take a significant position before regular broadcasts started.

1992–2018

1992–1997

SIC was launched in 1992. The original logo was designed by Hans Donner (designer of the famous Rede Globo logo).

1997–2018

1997–2001

2001–2008

2008–2018

2018–present

For the first time since 1997, SIC updated its logo on 6 October 2018 at 13:00 local time, to coincide with its 26th year on air. The letters are clearer and the reflections have been reduced, but the essential structure of the logo has been maintained.